What is output of this code ? Please Explain.

Question

class A{
int attr;
}
class test{

static void foo(A a){
a=new A();
a.attr=2;
}

public static void main(String args[])
{
A a=new A();
a.attr=1;
foo(a);
System.out.print(a.attr);
}

}

Answer 1

1
modifying a do not modify the object it has in it at the beginning of the call of foo as you create a new instance of A